I fear you’ll be waiting a long time my friend. Word for some time is the Air is basically EOL—but still for sale mostly for education market and to have a response to the Chrome.
The next generation Air, with better front carera and new form factor is the MacBook. Yes, it’s also more expensive.
(I think Apple updated the Air CPU this year only as a response to the growing storm that Apple was selling “brand new” computers with components from 3+ years ago. This allowed the clock to reset on the Air, albeit with a half-hearted update.
My guess is at some point you’ll either have to move to the MacBook/MBP line or perhaps the iPad line will be good enough for your needs at some point?
Either way, best of luck.